Separable fastener



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I o a 0 /Q 9 0. ,4 .1... .wvvvvvv5vu Patented Aug. 2, 1938 PATENT OFFICE 2,125,698 sEPARABLE FASTENEB Otto Ulbricht, Birkwitz-on-the-Elbe, Germany Application May 3, 1935, Serial No. 19,677 I In Germany May 2, 1934 Claims.

This invention relates to separable fasteners.

' In the known types of separable fasteners comprising fastening elements made of metal or artificial materials the individual elements are firml, ly attached to the stringers or bands s glthat fasteners can be made only in definite measured lengths which often are not suited for special purposes. Furthermore, variegated fasteners made from artificial masses, besides being obtainable at present only in certain lengths, depend for their color scheme and general arrangement entirely upon the taste of their manufacturers, and the maintenance of an ample stock thereof affording a wide selection involves a considerable, and frequently unbearable, outlay on the part of both manufacturers and distributers. The invention eliminates these drawbacks by providing a separable fastener, the fastening elements of which, with the exception of an ini- 0 tial member and an end member, loosely ride on the stringer instead of being firmly secured thereto.

The fastener according to the invention affords the advantage that the two interlocking elements meet each other smoothly, so that the frequent obstructions known to all users of the existing types of separable fasteners are eliminated, even if the latter form a curve instead of a straight line. Besides, the invention makes it possiblefor users to assemble a separable fastener from individual units according to their taste as to the color scheme and their requirements as tolength.

The invention attains its objectby providing 35 the elements to .be connected with the stringer with channels and slots proceeding therefrom' and arranging the channels on the roll edge of the stringer .or band and-placing the body of the latter between the slots. Lateral withdrawal 250361 the elements, is effectively prevented, since thechannels correspond in diameter to the reinforced-edge of the stringer and the slots to the thickness thereof. j; By way of example, one form of the invention 45 is illustrated in theaccompanying drawing, in which Figure 1 is a view of a finished separable fastener; Fig. 2, a top view of a fastening element; Fig. 3, a rear view of an initial member; Fig. 4, atop view of an initialmember with the clamping member opened; Fig. 4a. is a section on the line C--D, of Fig. 3, and shows the lower half of. the initial member; Fig. 4b, a top view of the initial member placed on the stringers, with the clamping member half closed whose teeth engage the reinforced edge of the stringers; Fig. 5, a lateral view of an end compensat ing and stop member with the clamping member fully turned up; Fig. 6, a side view of a fastening element; Fig. 7, a sectional view of a fastening element in the direction of the line 5 A'-B, of Fig. 2; and Fig. 8, a top view of a fastening element.

Referring to the drawing, ldesignates the two stringers or bands of fabric to be sewn to the article concerned, which on the sides facl0. ing each other have a reinforced edge 2. The individually attachable fastening elements may have any desired shape and are fitted with the channels 3 and, branching oif therefrom, the slots 4 which are open on the side and smaller in width than the diameter of the channels 3.

In a single row construction of the fastener the heads of the elements meeting each other are of corresponding length and provided with so notches 5, so that after-engagement of the elements the.opposite reinforced edge is inserted in the notches 5 and the sides 6 insure good guiding of the stringer.

The initial member I as shown in Figs. 1, 3, 4 .is provided with two channels l0, each of which opens laterally into a slot II. The clamping member 8 fitting snugly into a recess l2 and having comb-like holding teeth l3 serves for loosening the initial member I so as to permit proper arrangement andspacing of the fastening elements The fastening elements shown in Figs., 6, l, 8

-have a hemispherical shape "or other suitable form and possess a cavity I4 corresponding to 35,

their shape. .They are further provided with a camlike projection i5 extendinginto alower stop l8 and an upper one i! and with anopening 5, 6 disposed oppositely the cavity l4." The channel 10 and the slot ii are intended to facilitate the arrangement-of the fastening elements 'on the reinforced edge 2 so that they areloesely seated thereon. a The end compensating and stop members 9, as

shown in Figs. 1 and 5, serve for compensating and finishing the fastener and, in principle, are constructed like the initial members l,'w ith the difference, however, that the channel it! and the slot II are disposed on one sidesonly, thatis,

where the camlike projection l5 or the other projection I 9 with the stops I! of the initial member I are located,'as indicated in Fig. 4. The clamping member 8 having its teeth l3 inthe recess 20, in which it is rotatably disposed with its shaft 2|, serves again for securing the end membersltothe reinforcededgeisoastobe readily detachable.

In a two row construction the notches I are dispensed with and the heads of the elements shortened to the extent of the length of the sides t.

I claim:

1. separable fastener. comprising, in combination, stringers each having a reinforced edge, exchangeable and ilxable initial and end members on the reinforced edges of said stringers and a plurality of detachable fastening elements loosely disposed on the reinforced edge of said stringers between said initial and end members, said fastening elements being provided with channels and slots laterally extending from said channels and open on the side for selectively arranging said elements on saidstringers.

2. Separable fastener according to claim 1, wherein the reinforced edge of the stringers is inserted in the channels of the fastening elements and the body portion of the stringers in the slots thereof.

3. separable fastener according to claim 1, wherein the width of the slots of the fastening elements is smaller than the diameter of the channels.

4. separable fastener according to claim 1, wherein the initial members are recessed and each fitted with two channels laterally opening into slots and a toothed clamping member is provided adapted to be turned up and down and to engage said recess for detachabiy fastening the initial members to the reinforced edge and facilitating proper arrangement and spacing of the fastening elements relative to one another.

5. separable fastener according to claim 1, wherein the end member's are recessed and each fitted with a channel and slot on one side and a toothed clamping member is provided adapted to be turned up and down and to engage said recess for detachably securing the end members to the reinforced edge.

OTTO ULBRICH'I'. 

